cupyx.scipy.ndimage.morphological_gradient(input, size=None, footprint=None, structure=None, output=None, mode='reflect', cval=0.0, origin=0)

Multidimensional morphological gradient.

The morphological gradient is calculated as the difference between a dilation and an erosion of the input with a given structuring element.

  • input (cupy.ndarray) – The input array.

  • size (tuple of ints) – Shape of a flat and full structuring element used for the morphological gradient. Optional if footprint or structure is provided.

  • footprint (array of ints) – Positions of non-infinite elements of a flat structuring element used for morphological gradient. Non-zero values give the set of neighbors of the center over which opening is chosen.

  • structure (array of ints) – Structuring element used for the morphological gradient. structure may be a non-flat structuring element.

  • output (cupy.ndarray, dtype or None) – The array in which to place the output.

  • mode (str) – The array borders are handled according to the given mode ('reflect', 'constant', 'nearest', 'mirror', 'wrap'). Default is 'reflect'.

  • cval (scalar) – Value to fill past edges of input if mode is constant. Default is 0.0.

  • origin (scalar or tuple of scalar) – The origin parameter controls the placement of the filter, relative to the center of the current element of the input. Default of 0 is equivalent to (0,)*input.ndim.


The morphological gradient of the input.

Return type